#include <iostream>
using namespace std;

int x = 5, y = 7;

void myFunction()
{
    int y = 10;
    cout <<"x from myFunction" << x <<"\n";
    cout <<"y from myFunction" << y <<"\n\n";
}

int main()
{
    cout <<"x from main" << x <<"\n";
    cout <<"y from main" << y <<"\n";
    myFunction();
    cout <<"Back from myFunction !\n\n";
    cout <<"x from main" << x <<"\n";
    cout <<"y from main" << y <<"\n";
    return 0;
}